Study on the Thermal Properties of Paraffin/Ceramsite Phase Change Concrete

Abstract:

Mixed paraffins, which had low phase transition temperature and high enthalpy,were used as phase change material (PCM),light-weight clay ceramsite was used as carrier, paraffin/ceramsite PCM was prepared and which was encapsulated by epoxy resin and triethylenetetramine.The results show that the proportion of liquid paraffin to solid paraffin is 4:6 through both temperature-time curve test and DSC analysis.The quality of paraffin which is absorbed in vacuum condition for 2 hours is 95.5% and the minimum leakage quality of paraffin in the process of thermal cycling is 3.3% which is half of the unencapsulated.It takes 480min for paraffin ceramsite PCM drop its temperature from 24°C to 18°C,and it is 240min for normal concrete which could effectly prevent heat transfer inside and outside,then reduce the indoor temperature fluctuations and improve living comfort compared to ordinary concrete.

• Periodical: Advanced Materials Research (Volumes 838-841)
• Pages: 91-95
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.838-841.91
• Online since: November 2013
• Authors: Qing Wang, Cun Bao Zhang, Zhao Yang Ding, Jun Liu
• Keywords: Paraffin, Paraffin/Ceramsite Phase Change Material, Phase Change Concrete, Thermal Property

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